Marco – In 1 Cor 11 we have Jesus’ words recorded the night of the Passover supper saying, 23 …the Lord Jesus … took bread; 24 and when He had given thanks, He broke it and said, “This is My body, which is for you; do this in remembrance of Me.” 25 In the same way He took the cup also after supper, saying, “This cup is the new covenant in My blood; do this, as often as you drink it, in remembrance of Me.” – NASV

So Marco – Jesus set up an example of the way the Memorial should be celebrated, practiced and remembered each year. The Passover lamb was a type (symbol/picture) representing Christ’s sacrifice (1 Cor 5:7). So instead of celebrating the Jewish Passover each year, we celebrate the our Lord’s memorial, which replaced it.